-93.24% is the change from 977 to 66
Calculation steps:
[( 66 - 977 ) ÷ 977] x 100 = -93.24%
Formula
Percentage change = [(66 - 977) / 977] x 100
Subtract the new number by the original number
66 - 977 = -911
-911 ÷ 977 = -0.932446264073695
-0.932446264073695 x 100 = -93.24%