86.21% is the change from 348 to 648
Calculation steps:
[( 648 - 348 ) ÷ 348] x 100 = 86.21%
Formula
Percentage change = [(648 - 348) / 348] x 100
Subtract the new number by the original number
648 - 348 = 300
300 ÷ 348 = 0.8620689655172413
0.8620689655172413 x 100 = 86.21%