-77.78% is the change from 387 to 86
Calculation steps:
[( 86 - 387 ) ÷ 387] x 100 = -77.78%
Formula
Percentage change = [(86 - 387) / 387] x 100
Subtract the new number by the original number
86 - 387 = -301
-301 ÷ 387 = -0.7777777777777778
-0.7777777777777778 x 100 = -77.78%