-45.99% is the change from 474 to 256
Calculation steps:
[( 256 - 474 ) ÷ 474] x 100 = -45.99%
Formula
Percentage change = [(256 - 474) / 474] x 100
Subtract the new number by the original number
256 - 474 = -218
-218 ÷ 474 = -0.459915611814346
-0.459915611814346 x 100 = -45.99%