-76.52% is the change from 971 to 228
Calculation steps:
[( 228 - 971 ) ÷ 971] x 100 = -76.52%
Formula
Percentage change = [(228 - 971) / 971] x 100
Subtract the new number by the original number
228 - 971 = -743
-743 ÷ 971 = -0.7651905252317199
-0.7651905252317199 x 100 = -76.52%