-57.43% is the change from 639 to 272
Calculation steps:
[( 272 - 639 ) ÷ 639] x 100 = -57.43%
Formula
Percentage change = [(272 - 639) / 639] x 100
Subtract the new number by the original number
272 - 639 = -367
-367 ÷ 639 = -0.5743348982785602
-0.5743348982785602 x 100 = -57.43%