-79.02% is the change from 939 to 197
Calculation steps:
[( 197 - 939 ) ÷ 939] x 100 = -79.02%
Formula
Percentage change = [(197 - 939) / 939] x 100
Subtract the new number by the original number
197 - 939 = -742
-742 ÷ 939 = -0.7902023429179978
-0.7902023429179978 x 100 = -79.02%