-30.92% is the change from 304 to 210
Calculation steps:
[( 210 - 304 ) ÷ 304] x 100 = -30.92%
Formula
Percentage change = [(210 - 304) / 304] x 100
Subtract the new number by the original number
210 - 304 = -94
-94 ÷ 304 = -0.3092105263157895
-0.3092105263157895 x 100 = -30.92%