-55.05% is the change from 307 to 138
Calculation steps:
[( 138 - 307 ) ÷ 307] x 100 = -55.05%
Formula
Percentage change = [(138 - 307) / 307] x 100
Subtract the new number by the original number
138 - 307 = -169
-169 ÷ 307 = -0.5504885993485342
-0.5504885993485342 x 100 = -55.05%