-57.35% is the change from 490 to 209
Calculation steps:
[( 209 - 490 ) ÷ 490] x 100 = -57.35%
Formula
Percentage change = [(209 - 490) / 490] x 100
Subtract the new number by the original number
209 - 490 = -281
-281 ÷ 490 = -0.573469387755102
-0.573469387755102 x 100 = -57.35%