-78.15% is the change from 302 to 66
Calculation steps:
[( 66 - 302 ) ÷ 302] x 100 = -78.15%
Formula
Percentage change = [(66 - 302) / 302] x 100
Subtract the new number by the original number
66 - 302 = -236
-236 ÷ 302 = -0.7814569536423841
-0.7814569536423841 x 100 = -78.15%