45.28% is the change from 212 to 308
Calculation steps:
[( 308 - 212 ) ÷ 212] x 100 = 45.28%
Formula
Percentage change = [(308 - 212) / 212] x 100
Subtract the new number by the original number
308 - 212 = 96
96 ÷ 212 = 0.4528301886792453
0.4528301886792453 x 100 = 45.28%