-15.64% is the change from 307 to 259
Calculation steps:
[( 259 - 307 ) ÷ 307] x 100 = -15.64%
Formula
Percentage change = [(259 - 307) / 307] x 100
Subtract the new number by the original number
259 - 307 = -48
-48 ÷ 307 = -0.1563517915309446
-0.1563517915309446 x 100 = -15.64%