-89% is the change from 209 to 23
Calculation steps:
[( 23 - 209 ) ÷ 209] x 100 = -89%
Formula
Percentage change = [(23 - 209) / 209] x 100
Subtract the new number by the original number
23 - 209 = -186
-186 ÷ 209 = -0.8899521531100478
-0.8899521531100478 x 100 = -89%