97.67% is the change from 215 to 425
Calculation steps:
[( 425 - 215 ) ÷ 215] x 100 = 97.67%
Formula
Percentage change = [(425 - 215) / 215] x 100
Subtract the new number by the original number
425 - 215 = 210
210 ÷ 215 = 0.9767441860465116
0.9767441860465116 x 100 = 97.67%