-64.44% is the change from 644 to 229
Calculation steps:
[( 229 - 644 ) ÷ 644] x 100 = -64.44%
Formula
Percentage change = [(229 - 644) / 644] x 100
Subtract the new number by the original number
229 - 644 = -415
-415 ÷ 644 = -0.6444099378881988
-0.6444099378881988 x 100 = -64.44%