18.99% is the change from 437 to 520
Calculation steps:
[( 520 - 437 ) ÷ 437] x 100 = 18.99%
Formula
Percentage change = [(520 - 437) / 437] x 100
Subtract the new number by the original number
520 - 437 = 83
83 ÷ 437 = 0.18993135011441648
0.18993135011441648 x 100 = 18.99%