-91.78% is the change from 73 to 6
Calculation steps:
[( 6 - 73 ) ÷ 73] x 100 = -91.78%
Formula
Percentage change = [(6 - 73) / 73] x 100
Subtract the new number by the original number
6 - 73 = -67
-67 ÷ 73 = -0.9178082191780822
-0.9178082191780822 x 100 = -91.78%