542.86% is the change from 21 to 135
Calculation steps:
[( 135 - 21 ) ÷ 21] x 100 = 542.86%
Formula
Percentage change = [(135 - 21) / 21] x 100
Subtract the new number by the original number
135 - 21 = 114
114 ÷ 21 = 5.428571428571429
5.428571428571429 x 100 = 542.86%