-7.2% is the change from 236 to 219
Calculation steps:
[( 219 - 236 ) ÷ 236] x 100 = -7.2%
Formula
Percentage change = [(219 - 236) / 236] x 100
Subtract the new number by the original number
219 - 236 = -17
-17 ÷ 236 = -0.07203389830508475
-0.07203389830508475 x 100 = -7.2%