1522.58% is the change from 31 to 503
Calculation steps:
[( 503 - 31 ) ÷ 31] x 100 = 1522.58%
Formula
Percentage change = [(503 - 31) / 31] x 100
Subtract the new number by the original number
503 - 31 = 472
472 ÷ 31 = 15.225806451612904
15.225806451612904 x 100 = 1522.58%