-90.82% is the change from 970 to 89
Calculation steps:
[( 89 - 970 ) ÷ 970] x 100 = -90.82%
Formula
Percentage change = [(89 - 970) / 970] x 100
Subtract the new number by the original number
89 - 970 = -881
-881 ÷ 970 = -0.9082474226804124
-0.9082474226804124 x 100 = -90.82%