-79.62% is the change from 844 to 172
Calculation steps:
[( 172 - 844 ) ÷ 844] x 100 = -79.62%
Formula
Percentage change = [(172 - 844) / 844] x 100
Subtract the new number by the original number
172 - 844 = -672
-672 ÷ 844 = -0.7962085308056872
-0.7962085308056872 x 100 = -79.62%