-6.44% is the change from 233 to 218
Calculation steps:
[( 218 - 233 ) ÷ 233] x 100 = -6.44%
Formula
Percentage change = [(218 - 233) / 233] x 100
Subtract the new number by the original number
218 - 233 = -15
-15 ÷ 233 = -0.06437768240343347
-0.06437768240343347 x 100 = -6.44%