-71.05% is the change from 684 to 198
Calculation steps:
[( 198 - 684 ) ÷ 684] x 100 = -71.05%
Formula
Percentage change = [(198 - 684) / 684] x 100
Subtract the new number by the original number
198 - 684 = -486
-486 ÷ 684 = -0.7105263157894737
-0.7105263157894737 x 100 = -71.05%