-90.88% is the change from 307 to 28
Calculation steps:
[( 28 - 307 ) ÷ 307] x 100 = -90.88%
Formula
Percentage change = [(28 - 307) / 307] x 100
Subtract the new number by the original number
28 - 307 = -279
-279 ÷ 307 = -0.9087947882736156
-0.9087947882736156 x 100 = -90.88%