21.78% is the change from 427 to 520
Calculation steps:
[( 520 - 427 ) ÷ 427] x 100 = 21.78%
Formula
Percentage change = [(520 - 427) / 427] x 100
Subtract the new number by the original number
520 - 427 = 93
93 ÷ 427 = 0.21779859484777517
0.21779859484777517 x 100 = 21.78%