-47.1% is the change from 482 to 255
Calculation steps:
[( 255 - 482 ) ÷ 482] x 100 = -47.1%
Formula
Percentage change = [(255 - 482) / 482] x 100
Subtract the new number by the original number
255 - 482 = -227
-227 ÷ 482 = -0.470954356846473
-0.470954356846473 x 100 = -47.1%