-69.2% is the change from 276 to 85
Calculation steps:
[( 85 - 276 ) ÷ 276] x 100 = -69.2%
Formula
Percentage change = [(85 - 276) / 276] x 100
Subtract the new number by the original number
85 - 276 = -191
-191 ÷ 276 = -0.6920289855072463
-0.6920289855072463 x 100 = -69.2%