-78.34% is the change from 591 to 128
Calculation steps:
[( 128 - 591 ) ÷ 591] x 100 = -78.34%
Formula
Percentage change = [(128 - 591) / 591] x 100
Subtract the new number by the original number
128 - 591 = -463
-463 ÷ 591 = -0.7834179357021996
-0.7834179357021996 x 100 = -78.34%