-91.79% is the change from 597 to 49
Calculation steps:
[( 49 - 597 ) ÷ 597] x 100 = -91.79%
Formula
Percentage change = [(49 - 597) / 597] x 100
Subtract the new number by the original number
49 - 597 = -548
-548 ÷ 597 = -0.9179229480737019
-0.9179229480737019 x 100 = -91.79%