-86.04% is the change from 917 to 128
Calculation steps:
[( 128 - 917 ) ÷ 917] x 100 = -86.04%
Formula
Percentage change = [(128 - 917) / 917] x 100
Subtract the new number by the original number
128 - 917 = -789
-789 ÷ 917 = -0.8604143947655398
-0.8604143947655398 x 100 = -86.04%