-70.79% is the change from 291 to 85
Calculation steps:
[( 85 - 291 ) ÷ 291] x 100 = -70.79%
Formula
Percentage change = [(85 - 291) / 291] x 100
Subtract the new number by the original number
85 - 291 = -206
-206 ÷ 291 = -0.7079037800687286
-0.7079037800687286 x 100 = -70.79%