-47.76% is the change from 492 to 257
Calculation steps:
[( 257 - 492 ) ÷ 492] x 100 = -47.76%
Formula
Percentage change = [(257 - 492) / 492] x 100
Subtract the new number by the original number
257 - 492 = -235
-235 ÷ 492 = -0.47764227642276424
-0.47764227642276424 x 100 = -47.76%