-8.7% is the change from 207 to 189
Calculation steps:
[( 189 - 207 ) ÷ 207] x 100 = -8.7%
Formula
Percentage change = [(189 - 207) / 207] x 100
Subtract the new number by the original number
189 - 207 = -18
-18 ÷ 207 = -0.08695652173913043
-0.08695652173913043 x 100 = -8.7%