-82.43% is the change from 979 to 172
Calculation steps:
[( 172 - 979 ) ÷ 979] x 100 = -82.43%
Formula
Percentage change = [(172 - 979) / 979] x 100
Subtract the new number by the original number
172 - 979 = -807
-807 ÷ 979 = -0.8243105209397344
-0.8243105209397344 x 100 = -82.43%