523.97% is the change from 121 to 755
Calculation steps:
[( 755 - 121 ) ÷ 121] x 100 = 523.97%
Formula
Percentage change = [(755 - 121) / 121] x 100
Subtract the new number by the original number
755 - 121 = 634
634 ÷ 121 = 5.239669421487603
5.239669421487603 x 100 = 523.97%