-38.92% is the change from 853 to 521
Calculation steps:
[( 521 - 853 ) ÷ 853] x 100 = -38.92%
Formula
Percentage change = [(521 - 853) / 853] x 100
Subtract the new number by the original number
521 - 853 = -332
-332 ÷ 853 = -0.3892145369284877
-0.3892145369284877 x 100 = -38.92%