-67.9% is the change from 81 to 26
Calculation steps:
[( 26 - 81 ) ÷ 81] x 100 = -67.9%
Formula
Percentage change = [(26 - 81) / 81] x 100
Subtract the new number by the original number
26 - 81 = -55
-55 ÷ 81 = -0.6790123456790124
-0.6790123456790124 x 100 = -67.9%