-69.97% is the change from 646 to 194
Calculation steps:
[( 194 - 646 ) ÷ 646] x 100 = -69.97%
Formula
Percentage change = [(194 - 646) / 646] x 100
Subtract the new number by the original number
194 - 646 = -452
-452 ÷ 646 = -0.6996904024767802
-0.6996904024767802 x 100 = -69.97%