906% is the change from 50 to 503
Calculation steps:
[( 503 - 50 ) ÷ 50] x 100 = 906%
Formula
Percentage change = [(503 - 50) / 50] x 100
Subtract the new number by the original number
503 - 50 = 453
453 ÷ 50 = 9.06
9.06 x 100 = 906%
Example