-57.48% is the change from 635 to 270
Calculation steps:
[( 270 - 635 ) ÷ 635] x 100 = -57.48%
Formula
Percentage change = [(270 - 635) / 635] x 100
Subtract the new number by the original number
270 - 635 = -365
-365 ÷ 635 = -0.5748031496062992
-0.5748031496062992 x 100 = -57.48%