-7.89% is the change from 887 to 817
Calculation steps:
[( 817 - 887 ) ÷ 887] x 100 = -7.89%
Formula
Percentage change = [(817 - 887) / 887] x 100
Subtract the new number by the original number
817 - 887 = -70
-70 ÷ 887 = -0.07891770011273957
-0.07891770011273957 x 100 = -7.89%