-7.82% is the change from 870 to 802
Calculation steps:
[( 802 - 870 ) ÷ 870] x 100 = -7.82%
Formula
Percentage change = [(802 - 870) / 870] x 100
Subtract the new number by the original number
802 - 870 = -68
-68 ÷ 870 = -0.07816091954022988
-0.07816091954022988 x 100 = -7.82%