-47.06% is the change from 51 to 27
Calculation steps:
[( 27 - 51 ) ÷ 51] x 100 = -47.06%
Formula
Percentage change = [(27 - 51) / 51] x 100
Subtract the new number by the original number
27 - 51 = -24
-24 ÷ 51 = -0.47058823529411764
-0.47058823529411764 x 100 = -47.06%