-65.38% is the change from 78 to 27
Calculation steps:
[( 27 - 78 ) ÷ 78] x 100 = -65.38%
Formula
Percentage change = [(27 - 78) / 78] x 100
Subtract the new number by the original number
27 - 78 = -51
-51 ÷ 78 = -0.6538461538461539
-0.6538461538461539 x 100 = -65.38%