148.8% is the change from 209 to 520
Calculation steps:
[( 520 - 209 ) ÷ 209] x 100 = 148.8%
Formula
Percentage change = [(520 - 209) / 209] x 100
Subtract the new number by the original number
520 - 209 = 311
311 ÷ 209 = 1.4880382775119618
1.4880382775119618 x 100 = 148.8%