667.5% is the change from 120 to 921
Calculation steps:
[( 921 - 120 ) ÷ 120] x 100 = 667.5%
Formula
Percentage change = [(921 - 120) / 120] x 100
Subtract the new number by the original number
921 - 120 = 801
801 ÷ 120 = 6.675
6.675 x 100 = 667.5%
Example