-94.35% is the change from 478 to 27
Calculation steps:
[( 27 - 478 ) ÷ 478] x 100 = -94.35%
Formula
Percentage change = [(27 - 478) / 478] x 100
Subtract the new number by the original number
27 - 478 = -451
-451 ÷ 478 = -0.9435146443514645
-0.9435146443514645 x 100 = -94.35%