-20.36% is the change from 334 to 266
Calculation steps:
[( 266 - 334 ) ÷ 334] x 100 = -20.36%
Formula
Percentage change = [(266 - 334) / 334] x 100
Subtract the new number by the original number
266 - 334 = -68
-68 ÷ 334 = -0.20359281437125748
-0.20359281437125748 x 100 = -20.36%