-31.77% is the change from 406 to 277
Calculation steps:
[( 277 - 406 ) ÷ 406] x 100 = -31.77%
Formula
Percentage change = [(277 - 406) / 406] x 100
Subtract the new number by the original number
277 - 406 = -129
-129 ÷ 406 = -0.31773399014778325
-0.31773399014778325 x 100 = -31.77%