-30.7% is the change from 215 to 149
Calculation steps:
[( 149 - 215 ) ÷ 215] x 100 = -30.7%
Formula
Percentage change = [(149 - 215) / 215] x 100
Subtract the new number by the original number
149 - 215 = -66
-66 ÷ 215 = -0.30697674418604654
-0.30697674418604654 x 100 = -30.7%