-36.87% is the change from 971 to 613
Calculation steps:
[( 613 - 971 ) ÷ 971] x 100 = -36.87%
Formula
Percentage change = [(613 - 971) / 971] x 100
Subtract the new number by the original number
613 - 971 = -358
-358 ÷ 971 = -0.368692070030896
-0.368692070030896 x 100 = -36.87%