-19.33% is the change from 802 to 647
Calculation steps:
[( 647 - 802 ) ÷ 802] x 100 = -19.33%
Formula
Percentage change = [(647 - 802) / 802] x 100
Subtract the new number by the original number
647 - 802 = -155
-155 ÷ 802 = -0.19326683291770574
-0.19326683291770574 x 100 = -19.33%