902% is the change from 50 to 501
Calculation steps:
[( 501 - 50 ) ÷ 50] x 100 = 902%
Formula
Percentage change = [(501 - 50) / 50] x 100
Subtract the new number by the original number
501 - 50 = 451
451 ÷ 50 = 9.02
9.02 x 100 = 902%
Example