-47.1% is the change from 155 to 82
Calculation steps:
[( 82 - 155 ) ÷ 155] x 100 = -47.1%
Formula
Percentage change = [(82 - 155) / 155] x 100
Subtract the new number by the original number
82 - 155 = -73
-73 ÷ 155 = -0.47096774193548385
-0.47096774193548385 x 100 = -47.1%