-78.29% is the change from 304 to 66
Calculation steps:
[( 66 - 304 ) ÷ 304] x 100 = -78.29%
Formula
Percentage change = [(66 - 304) / 304] x 100
Subtract the new number by the original number
66 - 304 = -238
-238 ÷ 304 = -0.7828947368421053
-0.7828947368421053 x 100 = -78.29%