122.62% is the change from 221 to 492
Calculation steps:
[( 492 - 221 ) ÷ 221] x 100 = 122.62%
Formula
Percentage change = [(492 - 221) / 221] x 100
Subtract the new number by the original number
492 - 221 = 271
271 ÷ 221 = 1.2262443438914028
1.2262443438914028 x 100 = 122.62%