-72.56% is the change from 503 to 138
Calculation steps:
[( 138 - 503 ) ÷ 503] x 100 = -72.56%
Formula
Percentage change = [(138 - 503) / 503] x 100
Subtract the new number by the original number
138 - 503 = -365
-365 ÷ 503 = -0.7256461232604374
-0.7256461232604374 x 100 = -72.56%