-45.05% is the change from 313 to 172
Calculation steps:
[( 172 - 313 ) ÷ 313] x 100 = -45.05%
Formula
Percentage change = [(172 - 313) / 313] x 100
Subtract the new number by the original number
172 - 313 = -141
-141 ÷ 313 = -0.4504792332268371
-0.4504792332268371 x 100 = -45.05%