-69.93% is the change from 276 to 83
Calculation steps:
[( 83 - 276 ) ÷ 276] x 100 = -69.93%
Formula
Percentage change = [(83 - 276) / 276] x 100
Subtract the new number by the original number
83 - 276 = -193
-193 ÷ 276 = -0.6992753623188406
-0.6992753623188406 x 100 = -69.93%