-80.4% is the change from 847 to 166
Calculation steps:
[( 166 - 847 ) ÷ 847] x 100 = -80.4%
Formula
Percentage change = [(166 - 847) / 847] x 100
Subtract the new number by the original number
166 - 847 = -681
-681 ÷ 847 = -0.8040141676505312
-0.8040141676505312 x 100 = -80.4%