-22.96% is the change from 810 to 624
Calculation steps:
[( 624 - 810 ) ÷ 810] x 100 = -22.96%
Formula
Percentage change = [(624 - 810) / 810] x 100
Subtract the new number by the original number
624 - 810 = -186
-186 ÷ 810 = -0.22962962962962963
-0.22962962962962963 x 100 = -22.96%