-70.45% is the change from 291 to 86
Calculation steps:
[( 86 - 291 ) ÷ 291] x 100 = -70.45%
Formula
Percentage change = [(86 - 291) / 291] x 100
Subtract the new number by the original number
86 - 291 = -205
-205 ÷ 291 = -0.7044673539518901
-0.7044673539518901 x 100 = -70.45%