-20.57% is the change from 802 to 637
Calculation steps:
[( 637 - 802 ) ÷ 802] x 100 = -20.57%
Formula
Percentage change = [(637 - 802) / 802] x 100
Subtract the new number by the original number
637 - 802 = -165
-165 ÷ 802 = -0.2057356608478803
-0.2057356608478803 x 100 = -20.57%