450.83% is the change from 120 to 661
Calculation steps:
[( 661 - 120 ) ÷ 120] x 100 = 450.83%
Formula
Percentage change = [(661 - 120) / 120] x 100
Subtract the new number by the original number
661 - 120 = 541
541 ÷ 120 = 4.508333333333334
4.508333333333334 x 100 = 450.83%