-49.03% is the change from 155 to 79
Calculation steps:
[( 79 - 155 ) ÷ 155] x 100 = -49.03%
Formula
Percentage change = [(79 - 155) / 155] x 100
Subtract the new number by the original number
79 - 155 = -76
-76 ÷ 155 = -0.49032258064516127
-0.49032258064516127 x 100 = -49.03%