-93.25% is the change from 978 to 66
Calculation steps:
[( 66 - 978 ) ÷ 978] x 100 = -93.25%
Formula
Percentage change = [(66 - 978) / 978] x 100
Subtract the new number by the original number
66 - 978 = -912
-912 ÷ 978 = -0.9325153374233128
-0.9325153374233128 x 100 = -93.25%