-84.99% is the change from 853 to 128
Calculation steps:
[( 128 - 853 ) ÷ 853] x 100 = -84.99%
Formula
Percentage change = [(128 - 853) / 853] x 100
Subtract the new number by the original number
128 - 853 = -725
-725 ÷ 853 = -0.8499413833528722
-0.8499413833528722 x 100 = -84.99%