-86.47% is the change from 946 to 128
Calculation steps:
[( 128 - 946 ) ÷ 946] x 100 = -86.47%
Formula
Percentage change = [(128 - 946) / 946] x 100
Subtract the new number by the original number
128 - 946 = -818
-818 ÷ 946 = -0.864693446088795
-0.864693446088795 x 100 = -86.47%