-86.61% is the change from 478 to 64
Calculation steps:
[( 64 - 478 ) ÷ 478] x 100 = -86.61%
Formula
Percentage change = [(64 - 478) / 478] x 100
Subtract the new number by the original number
64 - 478 = -414
-414 ÷ 478 = -0.8661087866108786
-0.8661087866108786 x 100 = -86.61%