84.29% is the change from 350 to 645
Calculation steps:
[( 645 - 350 ) ÷ 350] x 100 = 84.29%
Formula
Percentage change = [(645 - 350) / 350] x 100
Subtract the new number by the original number
645 - 350 = 295
295 ÷ 350 = 0.8428571428571429
0.8428571428571429 x 100 = 84.29%