64.9% is the change from 208 to 343
Calculation steps:
[( 343 - 208 ) ÷ 208] x 100 = 64.9%
Formula
Percentage change = [(343 - 208) / 208] x 100
Subtract the new number by the original number
343 - 208 = 135
135 ÷ 208 = 0.6490384615384616
0.6490384615384616 x 100 = 64.9%