-62.15% is the change from 634 to 240
Calculation steps:
[( 240 - 634 ) ÷ 634] x 100 = -62.15%
Formula
Percentage change = [(240 - 634) / 634] x 100
Subtract the new number by the original number
240 - 634 = -394
-394 ÷ 634 = -0.6214511041009464
-0.6214511041009464 x 100 = -62.15%