-77.78% is the change from 45 to 10
Calculation steps:
[( 10 - 45 ) ÷ 45] x 100 = -77.78%
Formula
Percentage change = [(10 - 45) / 45] x 100
Subtract the new number by the original number
10 - 45 = -35
-35 ÷ 45 = -0.7777777777777778
-0.7777777777777778 x 100 = -77.78%