-78.55% is the change from 387 to 83
Calculation steps:
[( 83 - 387 ) ÷ 387] x 100 = -78.55%
Formula
Percentage change = [(83 - 387) / 387] x 100
Subtract the new number by the original number
83 - 387 = -304
-304 ÷ 387 = -0.7855297157622739
-0.7855297157622739 x 100 = -78.55%