-73.68% is the change from 209 to 55
Calculation steps:
[( 55 - 209 ) ÷ 209] x 100 = -73.68%
Formula
Percentage change = [(55 - 209) / 209] x 100
Subtract the new number by the original number
55 - 209 = -154
-154 ÷ 209 = -0.7368421052631579
-0.7368421052631579 x 100 = -73.68%