-19.6% is the change from 597 to 480
Calculation steps:
[( 480 - 597 ) ÷ 597] x 100 = -19.6%
Formula
Percentage change = [(480 - 597) / 597] x 100
Subtract the new number by the original number
480 - 597 = -117
-117 ÷ 597 = -0.19597989949748743
-0.19597989949748743 x 100 = -19.6%