65.09% is the change from 212 to 350
Calculation steps:
[( 350 - 212 ) ÷ 212] x 100 = 65.09%
Formula
Percentage change = [(350 - 212) / 212] x 100
Subtract the new number by the original number
350 - 212 = 138
138 ÷ 212 = 0.6509433962264151
0.6509433962264151 x 100 = 65.09%