-90.86% is the change from 853 to 78
Calculation steps:
[( 78 - 853 ) ÷ 853] x 100 = -90.86%
Formula
Percentage change = [(78 - 853) / 853] x 100
Subtract the new number by the original number
78 - 853 = -775
-775 ÷ 853 = -0.9085580304806565
-0.9085580304806565 x 100 = -90.86%