-79.12% is the change from 814 to 170
Calculation steps:
[( 170 - 814 ) ÷ 814] x 100 = -79.12%
Formula
Percentage change = [(170 - 814) / 814] x 100
Subtract the new number by the original number
170 - 814 = -644
-644 ÷ 814 = -0.7911547911547911
-0.7911547911547911 x 100 = -79.12%