-78.62% is the change from 318 to 68
Calculation steps:
[( 68 - 318 ) ÷ 318] x 100 = -78.62%
Formula
Percentage change = [(68 - 318) / 318] x 100
Subtract the new number by the original number
68 - 318 = -250
-250 ÷ 318 = -0.7861635220125787
-0.7861635220125787 x 100 = -78.62%