-91.44% is the change from 970 to 83
Calculation steps:
[( 83 - 970 ) ÷ 970] x 100 = -91.44%
Formula
Percentage change = [(83 - 970) / 970] x 100
Subtract the new number by the original number
83 - 970 = -887
-887 ÷ 970 = -0.9144329896907216
-0.9144329896907216 x 100 = -91.44%