-23.23% is the change from 818 to 628
Calculation steps:
[( 628 - 818 ) ÷ 818] x 100 = -23.23%
Formula
Percentage change = [(628 - 818) / 818] x 100
Subtract the new number by the original number
628 - 818 = -190
-190 ÷ 818 = -0.23227383863080683
-0.23227383863080683 x 100 = -23.23%