48.58% is the change from 212 to 315
Calculation steps:
[( 315 - 212 ) ÷ 212] x 100 = 48.58%
Formula
Percentage change = [(315 - 212) / 212] x 100
Subtract the new number by the original number
315 - 212 = 103
103 ÷ 212 = 0.4858490566037736
0.4858490566037736 x 100 = 48.58%