6.76% is the change from 488 to 521
Calculation steps:
[( 521 - 488 ) ÷ 488] x 100 = 6.76%
Formula
Percentage change = [(521 - 488) / 488] x 100
Subtract the new number by the original number
521 - 488 = 33
33 ÷ 488 = 0.06762295081967214
0.06762295081967214 x 100 = 6.76%