-64.38% is the change from 657 to 234
Calculation steps:
[( 234 - 657 ) ÷ 657] x 100 = -64.38%
Formula
Percentage change = [(234 - 657) / 657] x 100
Subtract the new number by the original number
234 - 657 = -423
-423 ÷ 657 = -0.6438356164383562
-0.6438356164383562 x 100 = -64.38%