-79.04% is the change from 830 to 174
Calculation steps:
[( 174 - 830 ) ÷ 830] x 100 = -79.04%
Formula
Percentage change = [(174 - 830) / 830] x 100
Subtract the new number by the original number
174 - 830 = -656
-656 ÷ 830 = -0.7903614457831325
-0.7903614457831325 x 100 = -79.04%