-91.54% is the change from 591 to 50
Calculation steps:
[( 50 - 591 ) ÷ 591] x 100 = -91.54%
Formula
Percentage change = [(50 - 591) / 591] x 100
Subtract the new number by the original number
50 - 591 = -541
-541 ÷ 591 = -0.9153976311336718
-0.9153976311336718 x 100 = -91.54%