20.61% is the change from 427 to 515
Calculation steps:
[( 515 - 427 ) ÷ 427] x 100 = 20.61%
Formula
Percentage change = [(515 - 427) / 427] x 100
Subtract the new number by the original number
515 - 427 = 88
88 ÷ 427 = 0.20608899297423888
0.20608899297423888 x 100 = 20.61%