661.9% is the change from 21 to 160
Calculation steps:
[( 160 - 21 ) ÷ 21] x 100 = 661.9%
Formula
Percentage change = [(160 - 21) / 21] x 100
Subtract the new number by the original number
160 - 21 = 139
139 ÷ 21 = 6.619047619047619
6.619047619047619 x 100 = 661.9%