-71.34% is the change from 977 to 280
Calculation steps:
[( 280 - 977 ) ÷ 977] x 100 = -71.34%
Formula
Percentage change = [(280 - 977) / 977] x 100
Subtract the new number by the original number
280 - 977 = -697
-697 ÷ 977 = -0.7134083930399181
-0.7134083930399181 x 100 = -71.34%