-36.63% is the change from 617 to 391
Calculation steps:
[( 391 - 617 ) ÷ 617] x 100 = -36.63%
Formula
Percentage change = [(391 - 617) / 617] x 100
Subtract the new number by the original number
391 - 617 = -226
-226 ÷ 617 = -0.36628849270664504
-0.36628849270664504 x 100 = -36.63%