-79.62% is the change from 314 to 64
Calculation steps:
[( 64 - 314 ) ÷ 314] x 100 = -79.62%
Formula
Percentage change = [(64 - 314) / 314] x 100
Subtract the new number by the original number
64 - 314 = -250
-250 ÷ 314 = -0.7961783439490446
-0.7961783439490446 x 100 = -79.62%