-66.87% is the change from 978 to 324
Calculation steps:
[( 324 - 978 ) ÷ 978] x 100 = -66.87%
Formula
Percentage change = [(324 - 978) / 978] x 100
Subtract the new number by the original number
324 - 978 = -654
-654 ÷ 978 = -0.6687116564417178
-0.6687116564417178 x 100 = -66.87%