-90.4% is the change from 917 to 88
Calculation steps:
[( 88 - 917 ) ÷ 917] x 100 = -90.4%
Formula
Percentage change = [(88 - 917) / 917] x 100
Subtract the new number by the original number
88 - 917 = -829
-829 ÷ 917 = -0.9040348964013086
-0.9040348964013086 x 100 = -90.4%