-48.98% is the change from 688 to 351
Calculation steps:
[( 351 - 688 ) ÷ 688] x 100 = -48.98%
Formula
Percentage change = [(351 - 688) / 688] x 100
Subtract the new number by the original number
351 - 688 = -337
-337 ÷ 688 = -0.4898255813953488
-0.4898255813953488 x 100 = -48.98%