-69.19% is the change from 688 to 212
Calculation steps:
[( 212 - 688 ) ÷ 688] x 100 = -69.19%
Formula
Percentage change = [(212 - 688) / 688] x 100
Subtract the new number by the original number
212 - 688 = -476
-476 ÷ 688 = -0.6918604651162791
-0.6918604651162791 x 100 = -69.19%