50200% is the change from 1 to 503
Calculation steps:
[( 503 - 1 ) ÷ 1] x 100 = 50200%
Formula
Percentage change = [(503 - 1) / 1] x 100
Subtract the new number by the original number
503 - 1 = 502
502 ÷ 1 = 502
502 x 100 = 50200%
Example