-73.72% is the change from 487 to 128
Calculation steps:
[( 128 - 487 ) ÷ 487] x 100 = -73.72%
Formula
Percentage change = [(128 - 487) / 487] x 100
Subtract the new number by the original number
128 - 487 = -359
-359 ÷ 487 = -0.7371663244353183
-0.7371663244353183 x 100 = -73.72%