-91.87% is the change from 209 to 17
Calculation steps:
[( 17 - 209 ) ÷ 209] x 100 = -91.87%
Formula
Percentage change = [(17 - 209) / 209] x 100
Subtract the new number by the original number
17 - 209 = -192
-192 ÷ 209 = -0.9186602870813397
-0.9186602870813397 x 100 = -91.87%