-77.87% is the change from 610 to 135
Calculation steps:
[( 135 - 610 ) ÷ 610] x 100 = -77.87%
Formula
Percentage change = [(135 - 610) / 610] x 100
Subtract the new number by the original number
135 - 610 = -475
-475 ÷ 610 = -0.7786885245901639
-0.7786885245901639 x 100 = -77.87%