-39.04% is the change from 853 to 520
Calculation steps:
[( 520 - 853 ) ÷ 853] x 100 = -39.04%
Formula
Percentage change = [(520 - 853) / 853] x 100
Subtract the new number by the original number
520 - 853 = -333
-333 ÷ 853 = -0.3903868698710434
-0.3903868698710434 x 100 = -39.04%