-93.1% is the change from 927 to 64
Calculation steps:
[( 64 - 927 ) ÷ 927] x 100 = -93.1%
Formula
Percentage change = [(64 - 927) / 927] x 100
Subtract the new number by the original number
64 - 927 = -863
-863 ÷ 927 = -0.9309600862998921
-0.9309600862998921 x 100 = -93.1%