-42.5% is the change from 520 to 299
Calculation steps:
[( 299 - 520 ) ÷ 520] x 100 = -42.5%
Formula
Percentage change = [(299 - 520) / 520] x 100
Subtract the new number by the original number
299 - 520 = -221
-221 ÷ 520 = -0.425
-0.425 x 100 = -42.5%