-75.16% is the change from 306 to 76
Calculation steps:
[( 76 - 306 ) ÷ 306] x 100 = -75.16%
Formula
Percentage change = [(76 - 306) / 306] x 100
Subtract the new number by the original number
76 - 306 = -230
-230 ÷ 306 = -0.7516339869281046
-0.7516339869281046 x 100 = -75.16%