-91.44% is the change from 771 to 66
Calculation steps:
[( 66 - 771 ) ÷ 771] x 100 = -91.44%
Formula
Percentage change = [(66 - 771) / 771] x 100
Subtract the new number by the original number
66 - 771 = -705
-705 ÷ 771 = -0.914396887159533
-0.914396887159533 x 100 = -91.44%