-70.36% is the change from 641 to 190
Calculation steps:
[( 190 - 641 ) ÷ 641] x 100 = -70.36%
Formula
Percentage change = [(190 - 641) / 641] x 100
Subtract the new number by the original number
190 - 641 = -451
-451 ÷ 641 = -0.7035881435257411
-0.7035881435257411 x 100 = -70.36%
Example