-41.73% is the change from 520 to 303
Calculation steps:
[( 303 - 520 ) ÷ 520] x 100 = -41.73%
Formula
Percentage change = [(303 - 520) / 520] x 100
Subtract the new number by the original number
303 - 520 = -217
-217 ÷ 520 = -0.4173076923076923
-0.4173076923076923 x 100 = -41.73%