680.95% is the change from 21 to 164
Calculation steps:
[( 164 - 21 ) ÷ 21] x 100 = 680.95%
Formula
Percentage change = [(164 - 21) / 21] x 100
Subtract the new number by the original number
164 - 21 = 143
143 ÷ 21 = 6.809523809523809
6.809523809523809 x 100 = 680.95%