-52.88% is the change from 520 to 245
Calculation steps:
[( 245 - 520 ) ÷ 520] x 100 = -52.88%
Formula
Percentage change = [(245 - 520) / 520] x 100
Subtract the new number by the original number
245 - 520 = -275
-275 ÷ 520 = -0.5288461538461539
-0.5288461538461539 x 100 = -52.88%