-98.09% is the change from 209 to 4
Calculation steps:
[( 4 - 209 ) ÷ 209] x 100 = -98.09%
Formula
Percentage change = [(4 - 209) / 209] x 100
Subtract the new number by the original number
4 - 209 = -205
-205 ÷ 209 = -0.9808612440191388
-0.9808612440191388 x 100 = -98.09%