-34.01% is the change from 644 to 425
Calculation steps:
[( 425 - 644 ) ÷ 644] x 100 = -34.01%
Formula
Percentage change = [(425 - 644) / 644] x 100
Subtract the new number by the original number
425 - 644 = -219
-219 ÷ 644 = -0.34006211180124224
-0.34006211180124224 x 100 = -34.01%