-6.34% is the change from 284 to 266
Calculation steps:
[( 266 - 284 ) ÷ 284] x 100 = -6.34%
Formula
Percentage change = [(266 - 284) / 284] x 100
Subtract the new number by the original number
266 - 284 = -18
-18 ÷ 284 = -0.06338028169014084
-0.06338028169014084 x 100 = -6.34%