-49.45% is the change from 91 to 46
Calculation steps:
[( 46 - 91 ) ÷ 91] x 100 = -49.45%
Formula
Percentage change = [(46 - 91) / 91] x 100
Subtract the new number by the original number
46 - 91 = -45
-45 ÷ 91 = -0.4945054945054945
-0.4945054945054945 x 100 = -49.45%