930% is the change from 50 to 515
Calculation steps:
[( 515 - 50 ) ÷ 50] x 100 = 930%
Formula
Percentage change = [(515 - 50) / 50] x 100
Subtract the new number by the original number
515 - 50 = 465
465 ÷ 50 = 9.3
9.3 x 100 = 930%
Example