49.04% is the change from 208 to 310
Calculation steps:
[( 310 - 208 ) ÷ 208] x 100 = 49.04%
Formula
Percentage change = [(310 - 208) / 208] x 100
Subtract the new number by the original number
310 - 208 = 102
102 ÷ 208 = 0.49038461538461536
0.49038461538461536 x 100 = 49.04%