-18.05% is the change from 266 to 218
Calculation steps:
[( 218 - 266 ) ÷ 266] x 100 = -18.05%
Formula
Percentage change = [(218 - 266) / 266] x 100
Subtract the new number by the original number
218 - 266 = -48
-48 ÷ 266 = -0.18045112781954886
-0.18045112781954886 x 100 = -18.05%