64.76% is the change from 210 to 346
Calculation steps:
[( 346 - 210 ) ÷ 210] x 100 = 64.76%
Formula
Percentage change = [(346 - 210) / 210] x 100
Subtract the new number by the original number
346 - 210 = 136
136 ÷ 210 = 0.6476190476190476
0.6476190476190476 x 100 = 64.76%