-74.58% is the change from 177 to 45
Calculation steps:
[( 45 - 177 ) ÷ 177] x 100 = -74.58%
Formula
Percentage change = [(45 - 177) / 177] x 100
Subtract the new number by the original number
45 - 177 = -132
-132 ÷ 177 = -0.7457627118644068
-0.7457627118644068 x 100 = -74.58%