-55.71% is the change from 490 to 217
Calculation steps:
[( 217 - 490 ) ÷ 490] x 100 = -55.71%
Formula
Percentage change = [(217 - 490) / 490] x 100
Subtract the new number by the original number
217 - 490 = -273
-273 ÷ 490 = -0.5571428571428572
-0.5571428571428572 x 100 = -55.71%