35.04% is the change from 645 to 871
Calculation steps:
[( 871 - 645 ) ÷ 645] x 100 = 35.04%
Formula
Percentage change = [(871 - 645) / 645] x 100
Subtract the new number by the original number
871 - 645 = 226
226 ÷ 645 = 0.35038759689922483
0.35038759689922483 x 100 = 35.04%