-31.69% is the change from 688 to 470
Calculation steps:
[( 470 - 688 ) ÷ 688] x 100 = -31.69%
Formula
Percentage change = [(470 - 688) / 688] x 100
Subtract the new number by the original number
470 - 688 = -218
-218 ÷ 688 = -0.3168604651162791
-0.3168604651162791 x 100 = -31.69%