8.96% is the change from 212 to 231
Calculation steps:
[( 231 - 212 ) ÷ 212] x 100 = 8.96%
Formula
Percentage change = [(231 - 212) / 212] x 100
Subtract the new number by the original number
231 - 212 = 19
19 ÷ 212 = 0.08962264150943396
0.08962264150943396 x 100 = 8.96%