-77.94% is the change from 612 to 135
Calculation steps:
[( 135 - 612 ) ÷ 612] x 100 = -77.94%
Formula
Percentage change = [(135 - 612) / 612] x 100
Subtract the new number by the original number
135 - 612 = -477
-477 ÷ 612 = -0.7794117647058824
-0.7794117647058824 x 100 = -77.94%