-45.78% is the change from 498 to 270
Calculation steps:
[( 270 - 498 ) ÷ 498] x 100 = -45.78%
Formula
Percentage change = [(270 - 498) / 498] x 100
Subtract the new number by the original number
270 - 498 = -228
-228 ÷ 498 = -0.4578313253012048
-0.4578313253012048 x 100 = -45.78%