1226% is the change from 50 to 663
Calculation steps:
[( 663 - 50 ) ÷ 50] x 100 = 1226%
Formula
Percentage change = [(663 - 50) / 50] x 100
Subtract the new number by the original number
663 - 50 = 613
613 ÷ 50 = 12.26
12.26 x 100 = 1226%
Example