-39.05% is the change from 105 to 64
Calculation steps:
[( 64 - 105 ) ÷ 105] x 100 = -39.05%
Formula
Percentage change = [(64 - 105) / 105] x 100
Subtract the new number by the original number
64 - 105 = -41
-41 ÷ 105 = -0.3904761904761905
-0.3904761904761905 x 100 = -39.05%