-76.47% is the change from 306 to 72
Calculation steps:
[( 72 - 306 ) ÷ 306] x 100 = -76.47%
Formula
Percentage change = [(72 - 306) / 306] x 100
Subtract the new number by the original number
72 - 306 = -234
-234 ÷ 306 = -0.7647058823529411
-0.7647058823529411 x 100 = -76.47%