-72.08% is the change from 308 to 86
Calculation steps:
[( 86 - 308 ) ÷ 308] x 100 = -72.08%
Formula
Percentage change = [(86 - 308) / 308] x 100
Subtract the new number by the original number
86 - 308 = -222
-222 ÷ 308 = -0.7207792207792207
-0.7207792207792207 x 100 = -72.08%