63.29% is the change from 395 to 645
Calculation steps:
[( 645 - 395 ) ÷ 395] x 100 = 63.29%
Formula
Percentage change = [(645 - 395) / 395] x 100
Subtract the new number by the original number
645 - 395 = 250
250 ÷ 395 = 0.6329113924050633
0.6329113924050633 x 100 = 63.29%