# How are the most popular filters calculated?

#### Change and Change %

``Change  = (Close price of the current bar – Close price of the previous bar)``

"Close price of the current bar" is the current price.

"Close price of the previous bar" – the closing price of the previous bar on the selected timeframe.

"Change" is the difference between the current and the previous bars. "Change (%)" is calculated based on the timeframe selected in the screener. Hence, if the 1W time interval is applied, then change = Close of the current weekly bar - Close of the previous weekly bar (you can see these bars on the chart if you select the weekly chart timeframe).

``Change % = ((Close price of the current bar – Close price of the previous bar)/Close price of the previous bar) * 100``

Formulas for Change 1m, Change 5m, etc., in which the timeframe is specified, are calculated based on this timeframe, and the total timeframe of the screener is not taken into account. If the general screener timeframe is 1W, then Change 1m will still be calculated based on the 1m timeframe.

``````Change 1m = (Close price of the current 1m bar – Close price of the previous 1m bar)

Change 1m % = (Change 1m / Close price of the previous 1m bar ) * 100``````
``````Change 5m = (Close price of the current 5m bar – Close price of the previous 5m bar)

Change 5m % = (Change 5m / Close price of the previous 5m bar ) * 100``````
``````Change 15m = (Close price of the current 15m bar – Close price of the previous 15m bar)

Change 15m % = (Change 15m / Close price of the previous 15m bar ) * 100``````
``````Change 1h = (Close price of the current 1h bar – Close price of the previous 1h bar)

Change 1h % = (Change 1h / Close price of the previous 1h bar ) * 100``````
``````Change 4h = (Close price of the current 4h bar – Close price of the previous 4h bar)

Change 4h % = (Change 4h / Close price of the previous 4h bar ) * 100``````

#### Change from Open and Change from Open %

``Change from Open = (Close price of the current bar - Open price of the current bar)``
``Change from Open % = (Change from Open / Open price of the current bar) * 100``

The value shows the dynamics of the current bar.

#### Pre-market Change and Pre-market Change %

``Pre-market Change = (Close price of the pre-market - Close price of the previous regular session) ``
``Pre-market Change % = (Pre-market Change/ Close price of the previous regular session) * 100``

#### Post-market Change and Post-market Change %

``Post-market Change = Close price of the post-market - Close price of the previous regular session``
``Post-market Change % = Post-market Change / Close price of the previous regular session * 100``

#### Pre-market Change from Open and Pre-market Change from Open %

``Pre-market Change from Open = Close price of the pre-market - Open price of the pre-market``
``Pre-market Change from Open% = Pre-market Change from Open / Open price of the pre-market * 100``

#### GAP % and Pre-market Gap %

``GAP % = (Open price of the current bar - Close price of the previous bar) /Close price of the previous bar * 100``
``Pre-market Gap % = (Open price of the pre-market - Close price of the previous regular session) / Close price of the previous regular session *100``