-75.58% is the change from 647 to 158
Calculation steps:
[( 158 - 647 ) ÷ 647] x 100 = -75.58%
Formula
Percentage change = [(158 - 647) / 647] x 100
Subtract the new number by the original number
158 - 647 = -489
-489 ÷ 647 = -0.7557959814528593
-0.7557959814528593 x 100 = -75.58%