41.01% is the change from 217 to 306
Calculation steps:
[( 306 - 217 ) ÷ 217] x 100 = 41.01%
Formula
Percentage change = [(306 - 217) / 217] x 100
Subtract the new number by the original number
306 - 217 = 89
89 ÷ 217 = 0.41013824884792627
0.41013824884792627 x 100 = 41.01%