-25.48% is the change from 836 to 623
Calculation steps:
[( 623 - 836 ) ÷ 836] x 100 = -25.48%
Formula
Percentage change = [(623 - 836) / 836] x 100
Subtract the new number by the original number
623 - 836 = -213
-213 ÷ 836 = -0.25478468899521534
-0.25478468899521534 x 100 = -25.48%