-29.26% is the change from 639 to 452
Calculation steps:
[( 452 - 639 ) ÷ 639] x 100 = -29.26%
Formula
Percentage change = [(452 - 639) / 639] x 100
Subtract the new number by the original number
452 - 639 = -187
-187 ÷ 639 = -0.29264475743348983
-0.29264475743348983 x 100 = -29.26%