338.1% is the change from 21 to 92
Calculation steps:
[( 92 - 21 ) ÷ 21] x 100 = 338.1%
Formula
Percentage change = [(92 - 21) / 21] x 100
Subtract the new number by the original number
92 - 21 = 71
71 ÷ 21 = 3.380952380952381
3.380952380952381 x 100 = 338.1%