-85.8% is the change from 317 to 45
Calculation steps:
[( 45 - 317 ) ÷ 317] x 100 = -85.8%
Formula
Percentage change = [(45 - 317) / 317] x 100
Subtract the new number by the original number
45 - 317 = -272
-272 ÷ 317 = -0.8580441640378549
-0.8580441640378549 x 100 = -85.8%