-63.95% is the change from 688 to 248
Calculation steps:
[( 248 - 688 ) ÷ 688] x 100 = -63.95%
Formula
Percentage change = [(248 - 688) / 688] x 100
Subtract the new number by the original number
248 - 688 = -440
-440 ÷ 688 = -0.6395348837209303
-0.6395348837209303 x 100 = -63.95%