-71.38% is the change from 276 to 79
Calculation steps:
[( 79 - 276 ) ÷ 276] x 100 = -71.38%
Formula
Percentage change = [(79 - 276) / 276] x 100
Subtract the new number by the original number
79 - 276 = -197
-197 ÷ 276 = -0.7137681159420289
-0.7137681159420289 x 100 = -71.38%