-97.25% is the change from 836 to 23
Calculation steps:
[( 23 - 836 ) ÷ 836] x 100 = -97.25%
Formula
Percentage change = [(23 - 836) / 836] x 100
Subtract the new number by the original number
23 - 836 = -813
-813 ÷ 836 = -0.972488038277512
-0.972488038277512 x 100 = -97.25%