-87.18% is the change from 78 to 10
Calculation steps:
[( 10 - 78 ) ÷ 78] x 100 = -87.18%
Formula
Percentage change = [(10 - 78) / 78] x 100
Subtract the new number by the original number
10 - 78 = -68
-68 ÷ 78 = -0.8717948717948718
-0.8717948717948718 x 100 = -87.18%