-83.58% is the change from 67 to 11
Calculation steps:
[( 11 - 67 ) ÷ 67] x 100 = -83.58%
Formula
Percentage change = [(11 - 67) / 67] x 100
Subtract the new number by the original number
11 - 67 = -56
-56 ÷ 67 = -0.835820895522388
-0.835820895522388 x 100 = -83.58%