-79.1% is the change from 847 to 177
Calculation steps:
[( 177 - 847 ) ÷ 847] x 100 = -79.1%
Formula
Percentage change = [(177 - 847) / 847] x 100
Subtract the new number by the original number
177 - 847 = -670
-670 ÷ 847 = -0.7910271546635183
-0.7910271546635183 x 100 = -79.1%