-33.27% is the change from 520 to 347
Calculation steps:
[( 347 - 520 ) ÷ 520] x 100 = -33.27%
Formula
Percentage change = [(347 - 520) / 520] x 100
Subtract the new number by the original number
347 - 520 = -173
-173 ÷ 520 = -0.3326923076923077
-0.3326923076923077 x 100 = -33.27%