-70.79% is the change from 647 to 189
Calculation steps:
[( 189 - 647 ) ÷ 647] x 100 = -70.79%
Formula
Percentage change = [(189 - 647) / 647] x 100
Subtract the new number by the original number
189 - 647 = -458
-458 ÷ 647 = -0.7078825347758887
-0.7078825347758887 x 100 = -70.79%