-81.74% is the change from 838 to 153
Calculation steps:
[( 153 - 838 ) ÷ 838] x 100 = -81.74%
Formula
Percentage change = [(153 - 838) / 838] x 100
Subtract the new number by the original number
153 - 838 = -685
-685 ÷ 838 = -0.8174224343675418
-0.8174224343675418 x 100 = -81.74%