97.7% is the change from 217 to 429
Calculation steps:
[( 429 - 217 ) ÷ 217] x 100 = 97.7%
Formula
Percentage change = [(429 - 217) / 217] x 100
Subtract the new number by the original number
429 - 217 = 212
212 ÷ 217 = 0.9769585253456221
0.9769585253456221 x 100 = 97.7%