-47.97% is the change from 492 to 256
Calculation steps:
[( 256 - 492 ) ÷ 492] x 100 = -47.97%
Formula
Percentage change = [(256 - 492) / 492] x 100
Subtract the new number by the original number
256 - 492 = -236
-236 ÷ 492 = -0.4796747967479675
-0.4796747967479675 x 100 = -47.97%