32.78% is the change from 482 to 640
Calculation steps:
[( 640 - 482 ) ÷ 482] x 100 = 32.78%
Formula
Percentage change = [(640 - 482) / 482] x 100
Subtract the new number by the original number
640 - 482 = 158
158 ÷ 482 = 0.3278008298755187
0.3278008298755187 x 100 = 32.78%