-1.36% is the change from 221 to 218
Calculation steps:
[( 218 - 221 ) ÷ 221] x 100 = -1.36%
Formula
Percentage change = [(218 - 221) / 221] x 100
Subtract the new number by the original number
218 - 221 = -3
-3 ÷ 221 = -0.013574660633484163
-0.013574660633484163 x 100 = -1.36%