-55.8% is the change from 138 to 61
Calculation steps:
[( 61 - 138 ) ÷ 138] x 100 = -55.8%
Formula
Percentage change = [(61 - 138) / 138] x 100
Subtract the new number by the original number
61 - 138 = -77
-77 ÷ 138 = -0.5579710144927537
-0.5579710144927537 x 100 = -55.8%