-82.62% is the change from 978 to 170
Calculation steps:
[( 170 - 978 ) ÷ 978] x 100 = -82.62%
Formula
Percentage change = [(170 - 978) / 978] x 100
Subtract the new number by the original number
170 - 978 = -808
-808 ÷ 978 = -0.8261758691206544
-0.8261758691206544 x 100 = -82.62%