-77.78% is the change from 27 to 6
Calculation steps:
[( 6 - 27 ) ÷ 27] x 100 = -77.78%
Formula
Percentage change = [(6 - 27) / 27] x 100
Subtract the new number by the original number
6 - 27 = -21
-21 ÷ 27 = -0.7777777777777778
-0.7777777777777778 x 100 = -77.78%