-66.44% is the change from 149 to 50
Calculation steps:
[( 50 - 149 ) ÷ 149] x 100 = -66.44%
Formula
Percentage change = [(50 - 149) / 149] x 100
Subtract the new number by the original number
50 - 149 = -99
-99 ÷ 149 = -0.6644295302013423
-0.6644295302013423 x 100 = -66.44%