31.47% is the change from 645 to 848
Calculation steps:
[( 848 - 645 ) ÷ 645] x 100 = 31.47%
Formula
Percentage change = [(848 - 645) / 645] x 100
Subtract the new number by the original number
848 - 645 = 203
203 ÷ 645 = 0.3147286821705426
0.3147286821705426 x 100 = 31.47%