-18.66% is the change from 268 to 218
Calculation steps:
[( 218 - 268 ) ÷ 268] x 100 = -18.66%
Formula
Percentage change = [(218 - 268) / 268] x 100
Subtract the new number by the original number
218 - 268 = -50
-50 ÷ 268 = -0.1865671641791045
-0.1865671641791045 x 100 = -18.66%