-29.04% is the change from 644 to 457
Calculation steps:
[( 457 - 644 ) ÷ 644] x 100 = -29.04%
Formula
Percentage change = [(457 - 644) / 644] x 100
Subtract the new number by the original number
457 - 644 = -187
-187 ÷ 644 = -0.29037267080745344
-0.29037267080745344 x 100 = -29.04%