33.89% is the change from 481 to 644
Calculation steps:
[( 644 - 481 ) ÷ 481] x 100 = 33.89%
Formula
Percentage change = [(644 - 481) / 481] x 100
Subtract the new number by the original number
644 - 481 = 163
163 ÷ 481 = 0.3388773388773389
0.3388773388773389 x 100 = 33.89%