-13.36% is the change from 307 to 266
Calculation steps:
[( 266 - 307 ) ÷ 307] x 100 = -13.36%
Formula
Percentage change = [(266 - 307) / 307] x 100
Subtract the new number by the original number
266 - 307 = -41
-41 ÷ 307 = -0.13355048859934854
-0.13355048859934854 x 100 = -13.36%