-8.02% is the change from 237 to 218
Calculation steps:
[( 218 - 237 ) ÷ 237] x 100 = -8.02%
Formula
Percentage change = [(218 - 237) / 237] x 100
Subtract the new number by the original number
218 - 237 = -19
-19 ÷ 237 = -0.08016877637130802
-0.08016877637130802 x 100 = -8.02%