81.51% is the change from 357 to 648
Calculation steps:
[( 648 - 357 ) ÷ 357] x 100 = 81.51%
Formula
Percentage change = [(648 - 357) / 357] x 100
Subtract the new number by the original number
648 - 357 = 291
291 ÷ 357 = 0.8151260504201681
0.8151260504201681 x 100 = 81.51%