-78.53% is the change from 978 to 210
Calculation steps:
[( 210 - 978 ) ÷ 978] x 100 = -78.53%
Formula
Percentage change = [(210 - 978) / 978] x 100
Subtract the new number by the original number
210 - 978 = -768
-768 ÷ 978 = -0.7852760736196319
-0.7852760736196319 x 100 = -78.53%