-63.04% is the change from 644 to 238
Calculation steps:
[( 238 - 644 ) ÷ 644] x 100 = -63.04%
Formula
Percentage change = [(238 - 644) / 644] x 100
Subtract the new number by the original number
238 - 644 = -406
-406 ÷ 644 = -0.6304347826086957
-0.6304347826086957 x 100 = -63.04%